Which of the following requires the least amount of energy?

A. gaining an electron

B. losing two electrons

C. losing four electrons

D. losing an electron

Which is not essential for evolution to happen? A. Natural selection B. A population C. Inherited variation D. Change in allele or genotype frequency

Both plants are heterozygous for purple flowers. Use the letter P.

How can 1 pair of rats add 5000 rats to a population in 1 year?

What has to happen between DNA and RNA? Question 5 options: translation protein folding transcription replication

Which of not part of your immune system's response to a disease-causing organism vaccination recognition disposal immunity

A concerned male athlete brings a clear, red urine specimen to the physician's office. a. would you expect to see rbcs in the microscopic examination?

Rocks have been found in South America that are very similar in makeup and age to rocks in South Africa

In humans Select one: a. back muscles are strong to maintain erect posture. b. deep back muscles extend from the vertebrae to the ribs. c. most of the muscle mass in the lower back is from the spinalis muscle. d. back muscles are not very strong. e.

Why are hurricanes common in Florida?

Alcohol is the drug that is most commonly used by teens. false true description